I don't get it, you don't make a Mac version?
We purchased TurboTax 2020 on Amazon. They sent us the installation CD that has on the front cover: Windows or Mac. We had already installed TT on Windows. I installed TT on my new Mac and it acts just like TurboTax.
However, we started this year's return on TT on Windows. Had an issue, put it aside. Back again and trying to transfer the previous Windows file to Mac. But TT on the Mac claims the file is not valid (wrong date or something). Need to fix this quickly.